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48HG14---28,48HJ20---28
48PG20---28,48PM16---28
Gas Heating/Electric Cooling Unit
User’s Information Manual
NOTE TO INSTALLER:
!
WARNING
This manual should be left with the equipment owner.
TABLE OF CONTENTS
FIRE, EXPLOSION HAZARD
SAFETY CONSIDERATIONS ......................... 1
Failure to follow this warning could result in personal injury,
death and/or property damage.
DETERMINE TYPE OF UNIT CONTROL ............... 2
1. Improper installation, adjustment, alteration, service,
TO LIGHT UNIT ...
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Electro--Mechanical Control ! WARNING These units may be controlled directly by a thermostat, or indirectly by a third--party control that connects to the thermostat ELECTRICAL SHOCK HAZARD inputs. For direct thermostat control, use the Electro--Mechanical Control procedures in this book. For units with third--party Failure to follow this warning could result in personal injury controls connected to the thermostat inputs, refer to the third--party or death. control instructions for procedures to
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Step 8 — Remove lockout tag and turn on the electrical supply ! WARNING to unit. Step 9 — Open the external gas pipings manual shut off valve FIRE, EXPLOSION HAZARD located outside the unit. Failure to follow this warning could result in personal injury, Step 10 — Set room thermostat temperature selector slightly death, and/or property damage. above room temperature and set system switch to HEAT position If the main burners fail to light, or the blower fails to come on, shut down gas heating sec
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OFF ON OFF ON MAIN ON OFF STEP 1 STEP 2 STEP 3 CONTROL I.D. CONTROL I.D. LABEL LABEL SWITCH (SHIPPED IN SWITCH (SHIPPED IN “ON” POSITION) “ON” POSITION) 1/4˝ X .032˝ MALE SPADE 1/4˝ X .032˝ MALE SPADE TERMINALS (2) COMMON TERMINALS (2) COMMON STEP 6 STEP 5 STEP 4 STEP 7 STEP 9 STEP 8 STEP 10 C09513 Fig. 2 -- To Light Unit 4 LOCK-OUT TAG
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OFF ON OFF ON MAIN MODE ON Run Status Service Test Temperature Pressures Setpoints Inputs Alarm Status Outputs Configuration ESCAPE ENTER Time Clock Operating Modes Alarms OFF STEP 1 STEP 2 STEP 3 CONTROL I.D. CONTROL I.D. LABEL LABEL SWITCH (SHIPPED IN SWITCH (SHIPPED IN “ON” POSITION) “ON” POSITION) 1/4˝ X .032˝ MALE SPADE 1/4˝ X .032˝ MALE SPADE TERMINALS (2) COMMON TERMINALS (2) COMMON STEP 4 STEP 5 STEP 6 STEP 7 STEP 9 STEP 8 MODE Run Status Service Test Temperature Pressures Setpoints Inpu
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TO LIGHT UNIT (UNITS WITH ! WARNING COMFORTLINK ™ CONTROL) (CONTINUED) FIRE, EXPLOSION HAZARD See Fig. 1 for location of gas valve. Refer to Fig. 3 while Failure to follow this warning could result in personal injury, proceeding with the following steps. death, and/or property damage. Step 1 — Turn off the unit demand for cooling or heating by If the main burners fail to light, or the blower fails to come on, using the Scrolling Marquee. The Scrolling Marquee is located in shut down gas heating
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OFF ON MAIN ON OFF STEP 1 STEP 2 STEP 3 CONTROL I.D. LABEL SWITCH (SHIPPED IN “ON” POSITION) 1/4˝ X .032˝ MALE SPADE TERMINALS (2) COMMON STEP 5 STEP 4 STEP 6 STEP 7 C09578 Fig. 4 -- To Shut Unit Off NOTE: A password may be required to change Service Test Step 1 — Turn off the unit demand for cooling or heating by values depending on previous settings configured in the unit. using the Scrolling Marquee. The Scrolling Marquee is located in Default password is “1111.” the control box at the compre
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OFF ON MAIN MODE ON Run Status Service Test Temperature Pressures Setpoints Alarm Status Inputs Outputs Configuration ESCAPE ENTER Time Clock Operating Modes Alarms OFF STEP 1 STEP 2 STEP 3 CONTROL I.D. LABEL SWITCH (SHIPPED IN “ON” POSITION) 1/4˝ X .032˝ MALE SPADE TERMINALS (2) COMMON STEP 5 STEP 4 STEP 7 STEP 6 C09579 Fig. 5 -- To Shut Unit Off (Units with ComfortLinkt Control) If unit is being shut down because the heating season has ended, MAINTAINING YOUR UNIT restore electrical power to t
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ROUTINE MAINTENANCE AND CARE FOR THE EQUIPMENT OWNER Before proceeding with those things you might want to maintain yourself, please carefully consider the following: ! WARNING FIRE, EXPLOSION HAZARD Failure to follow this warning could result in personal injury, death, and/or property damage. 1.Turn off gas supply and electrical power to your unit before servicing or performing maintenance. PULL OUT CENTER OF HOOD TO RELEASE OUTDOOR AIR 2. Do not turn off electrical power to this unit without f
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Combustion Area and Vent System Fan Shaft Bearings The combustion area and vent system should be visually inspected Lubrication should only be done by qualified service personnel. before each heating season. The normal accumulation of dirt, soot, Contact your dealer for the required annual maintenance. rust, and scale can result in loss of efficiency and improper Refrigerant Circuits performance if allowed to build up. The refrigerant circuits are difficult to check for leaks without the proper
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7. Inspection of all supply--air and return--air ducts for leaks, ( ) Is the electrical supply switch on? Are any fuses blown, or has obstructions, and insulation integrity. Any problems found the circuit breaker tripped? should be resolved at this time. ( ) During the heating season, check the manual gas shutoff valve. 8. Inspection of the unit base to ensure that no cracks, gaps, Is this lever parallel with the pipe, indicating that the valve is open? Or is the lever at the right angle, indica
